I know that feeling. What I did, that helped with that, was put myself in a situation where I didn’t really have a choice, in my case martial arts. Alcohol is what I used when I was younger to loosen up, but if you go that route, beware dependence, which is what happened to me. After getting sober, my anxiety was even worse than before I started drinking, and only really has started settling down since I got into martial arts, which pushes me past my comfort zone every time I go.